Quick answers
- Which hospitals does James B. Oser work at?
- Medicare's official clinician data lists James B. Oser at 1 hospital: St James Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James B. Oser see patients?
- Medicare's clinician data lists 1 practice location in Butte, MT. Call before your visit to confirm the address.
- What is James B. Oser's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does James B. Oser accept Medicare assignment?
- Yes. Medicare's clinician data says James B. Oser accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for James B. Oser?
- (406) 495-7260, as listed in official Medicare / NPI Registry data.
- What is James B. Oser's NPI number?
- 1629121082. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James B. Oser works
Medicare's Facility Affiliation Data lists James B. Oser at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- St James HospitalButte, MT · Acute Care Hospital · CCN 270017
Practice locations
Addresses where James B. Oser is enrolled with Medicare (CMS data updated 2026-10-02).
- 400 S Clark StButte, MT 59701 (406) 495‑7260
Group practices
Medicare enrollment lists James B. Oser as a member of this group (CMS data updated 2026-10-02).
- SCL Health Medical Group-Butte LLC100 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Butte
Clinicians with the same Medicare primary specialty in Butte, MT — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Toledo College Of Medicine |
| Graduation year | 1989 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1629121082 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians